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Diffstat (limited to 'libc/sysdeps/linux/nds32/sysdep.h')
-rw-r--r--libc/sysdeps/linux/nds32/sysdep.h321
1 files changed, 107 insertions, 214 deletions
diff --git a/libc/sysdeps/linux/nds32/sysdep.h b/libc/sysdeps/linux/nds32/sysdep.h
index 7472a99d4..340797858 100644
--- a/libc/sysdeps/linux/nds32/sysdep.h
+++ b/libc/sysdeps/linux/nds32/sysdep.h
@@ -1,148 +1,96 @@
-//#include <sysdeps/generic/sysdep.h>
+/*
+ * Copyright (C) 2016-2017 Andes Technology, Inc.
+ * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
+ */
+
+#ifndef _LINUX_NDS32_SYSDEP_H
+#define _LINUX_NDS32_SYSDEP_H 1
+
+#include <common/sysdep.h>
+
#ifdef __ASSEMBLER__
/* Define an entry point visible from C. */
-#ifdef PIC
-#define ENTRY(name) \
+# ifdef PIC
+# define ENTRY(name) \
.pic \
.align 2; \
.globl C_SYMBOL_NAME(name); \
.func C_SYMBOL_NAME(name); \
.type C_SYMBOL_NAME(name), @function; \
-C_SYMBOL_NAME(name):
-#else
-#define ENTRY(name) \
+C_SYMBOL_NAME(name): \
+ cfi_startproc;
+
+# else
+# define ENTRY(name) \
.align 2; \
.globl C_SYMBOL_NAME(name); \
.func C_SYMBOL_NAME(name); \
.type C_SYMBOL_NAME(name), @function; \
-C_SYMBOL_NAME(name):
-#endif
+C_SYMBOL_NAME(name): \
+ cfi_startproc;
+# endif
#undef END
#define END(name) \
+ cfi_endproc; \
.endfunc; \
.size C_SYMBOL_NAME(name), .-C_SYMBOL_NAME(name)
/* If compiled for profiling, call `mcount' at the start of each function. */
-#ifdef HAVE_ELF
+# ifdef HAVE_ELF
#undef NO_UNDERSCORES
#define NO_UNDERSCORES
-#endif
+# endif
-#ifdef NO_UNDERSCORES
+# ifdef NO_UNDERSCORES
#define syscall_error __syscall_error
-#endif
+# endif
#define SYS_ify(syscall_name) (__NR_##syscall_name)
#define __do_syscall(syscall_name) \
syscall SYS_ify(syscall_name);
-#define SYSCALL_ERROR_HANDLER
-#define SYSCALL_ERROR __syscall_error
-
-
-#ifdef PIC
-#ifdef __NDS32_N1213_43U1H__
-#ifdef NDS_ABI_V0
-#define PSEUDO(name, syscall_name, args) \
- .pic; \
- .align 2; \
- 1: ret; \
- 99: addi $r0, $lp, 0; \
- jal 1b; \
- sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \
- ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \
- add $r1, $lp, $r1; \
- addi $lp, $r0, 0; \
- sethi $r15, hi20(SYSCALL_ERROR@PLT); \
- ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
- add $r15, $r15, $r1; \
- jr $r15; \
- nop; \
- ENTRY(name); \
- __do_syscall(syscall_name); \
- bgez $r5, 2f; \
- sltsi $r0, $r5, -4096; \
- beqz $r0, 99b; \
- 2:
-#else
-#define PSEUDO(name, syscall_name, args) \
- .pic; \
- .align 2; \
- 1: ret; \
- 99: addi $r2, $lp, 0; \
- jal 1b; \
- sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_); \
- ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_+4); \
- add $r1, $lp, $r1; \
- addi $lp, $r2, 0; \
- sethi $r15, hi20(SYSCALL_ERROR@PLT); \
- ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
- add $r15, $r15, $r1; \
- jr $r15; \
- nop; \
- ENTRY(name); \
- __do_syscall(syscall_name); \
- bgez $r0, 2f; \
- sltsi $r1, $r0, -4096; \
- beqz $r1, 99b; \
- 2:
-#endif
-#else
-#define PSEUDO(name, syscall_name, args) \
- .pic; \
- .align 2; \
- 99: mfusr $r15, $PC; \
- sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4); \
+# ifdef PIC
+# define PSEUDO(name, syscall_name, args) \
+ .pic; \
+ .align 2; \
+ 99: mfusr $r15, $PC; \
+ sethi $r1, hi20(_GLOBAL_OFFSET_TABLE_ + 4); \
ori $r1, $r1, lo12(_GLOBAL_OFFSET_TABLE_ + 8); \
- add $r1, $r15, $r1; \
- sethi $r15, hi20(SYSCALL_ERROR@PLT); \
- ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
- add $r15, $r15, $r1; \
- jr $r15; \
- nop; \
- ENTRY(name); \
- __do_syscall(syscall_name); \
- bgez $r0, 2f; \
- sltsi $r1, $r0, -4096; \
- beqz $r1, 99b; \
+ add $r1, $r15, $r1; \
+ sethi $r15, hi20(SYSCALL_ERROR@PLT); \
+ ori $r15, $r15, lo12(SYSCALL_ERROR@PLT); \
+ add $r15, $r15, $r1; \
+ jr $r15; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r0, 2f; \
+ sltsi $r1, $r0, -4096; \
+ beqz $r1, 99b; \
2:
-#endif
-#else
-#ifdef OLD2_ABI
-#define PSEUDO(name, syscall_name, args) \
- .align 2; \
- 99: j SYSCALL_ERROR; \
- nop; \
- ENTRY(name); \
- __do_syscall(syscall_name); \
- bgez $r5, 2f; \
- sltsi $r0, $r5, -4096; \
- beqz $r0, 99b; \
+# else
+# define PSEUDO(name, syscall_name, args) \
+ .align 2; \
+ 99: j SYSCALL_ERROR; \
+ nop; \
+ ENTRY(name); \
+ __do_syscall(syscall_name); \
+ bgez $r0, 2f; \
+ sltsi $r1, $r0, -4096; \
+ beqz $r1, 99b; \
2:
-#else
-#define PSEUDO(name, syscall_name, args) \
- .align 2; \
- 99: j SYSCALL_ERROR; \
- nop; \
- ENTRY(name); \
- __do_syscall(syscall_name); \
- bgez $r0, 2f; \
- sltsi $r1, $r0, -4096; \
- beqz $r1, 99b; \
- 2:
-#endif
-#endif
+# endif
-#define PSEUDO_NOERRNO(name, syscall_name, args) \
- ENTRY(name); \
+#define PSEUDO_NOERRNO(name, syscall_name, args) \
+ ENTRY(name); \
__do_syscall(syscall_name);
#undef PSEUDO_END
-#define PSEUDO_END(sym) \
- SYSCALL_ERROR_HANDLER \
+#define PSEUDO_END(sym) \
+ SYSCALL_ERROR_HANDLER \
END(sym)
#undef PSEUDO_END_ERRVAL
@@ -152,120 +100,65 @@ C_SYMBOL_NAME(name):
#define ret_ERRVAL ret
-#define ret_NOERRNO ret
+#define ret_NOERRNO ret
#if defined NOT_IN_libc
#define SYSCALL_ERROR __local_syscall_error
#ifdef PIC
- #ifdef __NDS32_N1213_43U1H__
- #ifdef NDS_ABI_V0
- #define SYSCALL_ERROR_HANDLER \
- __local_syscall_error: pushm $gp, $lp, $sp; \
- jal 1f; \
- sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \
- ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \
- add $gp, $gp, $lp; \
- neg $r5, $r5; \
- push $r5; \
- addi $sp, $sp, -28; \
- bal C_SYMBOL_NAME(__errno_location@PLT); \
- addi $sp, $sp, 28; \
- pop $r1; \
- swi $r1, [$r5]; \
- li $r5, -1; \
- popm $gp, $lp, $sp; \
- 1: ret;
- #else
- #define SYSCALL_ERROR_HANDLER \
- __local_syscall_error: pushm $gp, $lp, $sp; \
- jal 1f; \
- sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_); \
- ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+4); \
- add $gp, $gp, $lp; \
- neg $r0, $r0; \
- push $r0; \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, -4; \
- #else \
- addi $sp, $sp, -28; \
- #endif \
- bal C_SYMBOL_NAME(__errno_location@PLT); \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, 4; \
- #else \
- addi $sp, $sp, 28; \
- #endif \
- pop $r1; \
- swi $r1, [$r0]; \
- li $r0, -1; \
- popm $gp, $lp, $sp; \
- 1: ret;
- #endif
- #else
- #define SYSCALL_ERROR_HANDLER \
- __local_syscall_error: pushm $gp, $lp, $sp; \
- mfusr $r15, $PC; \
- sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4); \
- ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8); \
- add $gp, $gp, $r15; \
- neg $r0, $r0; \
- push $r0; \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, -4; \
- #else \
- addi $sp, $sp, -28; \
- #endif \
- bal C_SYMBOL_NAME(__errno_location@PLT); \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, 4; \
- #else \
- addi $sp, $sp, 28; \
- #endif \
- pop $r1; \
- swi $r1, [$r0]; \
- li $r0, -1; \
- popm $gp, $lp, $sp; \
- 1: ret;
- #endif
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: \
+ pushm $gp, $lp; \
+ cfi_adjust_cfa_offset(8) \
+ cfi_rel_offset(gp, 0) \
+ cfi_rel_offset(lp, 4) \
+ mfusr $r15, $PC; \
+ sethi $gp, hi20(_GLOBAL_OFFSET_TABLE_+4); \
+ ori $gp, $gp, lo12(_GLOBAL_OFFSET_TABLE_+8); \
+ add $gp, $gp, $r15; \
+ neg $r0, $r0; \
+ push $r0; \
+ cfi_adjust_cfa_offset(4) \
+ cfi_rel_offset(r0, 0) \
+ addi $sp, $sp, -4; \
+ bal C_SYMBOL_NAME(__errno_location@PLT); \
+ addi $sp, $sp, 4; \
+ pop $r1; \
+ cfi_adjust_cfa_offset(-4); \
+ cfi_restore(r1); \
+ swi $r1, [$r0]; \
+ li $r0, -1; \
+ popm $gp, $lp; \
+ cfi_adjust_cfa_offset(-8); \
+ cfi_restore(lp); \
+ cfi_restore(gp); \
+ 1: ret;
#else
- #ifdef NDS_ABI_V0
- #define SYSCALL_ERROR_HANDLER \
- __local_syscall_error: push $lp; \
- neg $r5, $r5; \
- push $r5; \
- addi $sp, $sp, -28; \
- bal C_SYMBOL_NAME(__errno_location); \
- addi $sp, $sp, 28; \
- pop $r1; \
- swi $r1, [$r5]; \
- li $r5, -1; \
- pop $lp; \
+ #define SYSCALL_ERROR_HANDLER \
+ __local_syscall_error: \
+ push $lp; \
+ cfi_adjust_cfa_offset(4) \
+ cfi_rel_offset(lp, 0) \
+ neg $r0, $r0; \
+ push $r0; \
+ cfi_adjust_cfa_offset(4) \
+ cfi_rel_offset(r0, 0) \
+ addi $sp, $sp, -4; \
+ bal C_SYMBOL_NAME(__errno_location); \
+ addi $sp, $sp, 4; \
+ pop $r1; \
+ cfi_adjust_cfa_offset(-4); \
+ cfi_restore(r1); \
+ swi $r1, [$r0]; \
+ li $r0, -1; \
+ pop $lp; \
+ cfi_adjust_cfa_offset(-4); \
+ cfi_restore(lp); \
ret;
- #else
- #define SYSCALL_ERROR_HANDLER \
- __local_syscall_error: push $lp; \
- neg $r0, $r0; \
- push $r0; \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, -4; \
- #else \
- addi $sp, $sp, -28; \
- #endif \
- bal C_SYMBOL_NAME(__errno_location); \
- #if defined(NDS32_ABI_2) || defined(NDS32_ABI_2FP) \
- addi $sp, $sp, 4; \
- #else \
- addi $sp, $sp, 28; \
- #endif \
- pop $r1; \
- swi $r1, [$r0]; \
- li $r0, -1; \
- pop $lp; \
- ret;
- #endif
#endif
#else
#define SYSCALL_ERROR_HANDLER
#define SYSCALL_ERROR __syscall_error
#endif
+
#endif /* __ASSEMBLER__ */
+#endif //_LINUX_NDS32_SYSDEP_H
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